Damper control



DAMPER CONTROL Filed Feb. 21, 1929 2 sheets-sneer 1 @Ue/Wr yg/@wrm .Jang 21, 1930. u R. T. WILLIAMS i `1,744,189

DAMPER CONTROL Y Filed Feb. 21, 1929 2 Sheets-Sheet 2 Patented Jan. 21, 1930 UNITED* STATES PATENTy OFFICE ROBERT T. WILLIAMS, OF QUINOY, ILLINOIS, AssIGNOR To a. M. sHERR COMPANY,

OF QUINOY, ILLINOIS, A CORPORATION OFILLINoIs DAMPER CONTROL Application mea February 21, 1929. serial No. 341,604.

This invention relates to damper controls for house heating systems in which an automatic control is provided which may Operate thermostatically or otherwise. One of the ob jects of the invention is to provide in connection withsuch a dampercontrol means whereby the dampers may be operated manually, as for example, when coaling is to take place and in which the control will'automaticallyi return to normal, automatic operation after a predetermined interval. Another object is to. provide such a control permitting temporary manual operation at a point distant from the thermostatic control. Other Objects will appear from time to time in the course .of the specification and claims.'

The invention is illustrated more or less diagrammatically in the accompanying drawings wherein: I

\ Figure l is an elevation my invention applied; j Figure 2' is a front elevation of the device in normal working position with parts broken away and parts in section;

.Figure 3 is a fragmentary view based on Figure 2 showing the parts in manipulated position;

`Figure-4 is a sectional view taken on line ,1l-4l of Figure 2;

. Figure 5 is a wiring diagram. .j

Like parts are indicated by like symbols throughout the specification and drawings.

A isa closed bellows which may contain gas. kA1 is a reservoir communicating with the bellows'. A2 is an electricheating coil preferably formed aboutrthe reservoir. A3

of a furnace with is a junction box. A4, A Aarerwires leadingy from the ends of the coil to the junction box A3. The wire Al5 may be energized by means of a transformer As. A, A? are Wires lead ing from the junction box to a thermostat A9 which maybe located at any suitable place' andwill usually be locatedin some part of the house remote from. the heating escape and from thelbellows.

B is a frame upon which the bellows is anchored at one end. B1 is a connecting vrod carried by and preferabl fastened to the other end of the bellows. l 2 is a crank plate pivoted on anaxle B3. AThe connecting rod B1 is pivotally attached to the crank plate B?. The axle B3 is supported on a bracket B1 which projects downwardly from a hous ing B5 which incloses the bellows and associated parts.

Extending-from the crank plate B2 and preferably formed integrally with it is an arm C. To this arm is'attached a cable rope or other connection C1 which passes over suitable pulleys and is Iinally attached to a feo damper door C3. C, C are guiding and retaining members lixed' on the crank plate B2. Slidably mounted within these guides is a locking pin C". C7 is a member fixed on the pin C6. C8 is a compression spring about the pin C bearing at one end against the member C7 and at its other end against the guide l C5. C9 is a handle on the pin C". C1o is a contacting member mountedon the pin C j and formed preferably of insulating material or insulated from the pin C6.

D is an extension from the crank plate B2 and preferably integral with it. Pivoted on this extension is a handle D1 which is connected to a cable wire or other similar means D2 which, through suitable pulleys, is attached to a damper D3. Fastened to the handle D1 and adapted tomove with it is a quadrant D4 provided with a notch D5.

E is a spring positioned preferably on the housing, B5, and adapted to be contacted by the arm D1 when it is in the raised position, the spring serving tov cushion the upward movement in casey the latter is violent or rapid.

`assume the straight line position as `shown in Figures 1 and'2' without being influenced by the weight or pressure or pull. on the arms or influenced by the weight of the lever parts,

but by a pull exerted upon them or through them. Thus the re-engaging operation 1s not only not influenced by the weight of the parts C and D1, but it is not influenced by a pull exerted upon them through the members C1 or D2.

It will be realized that while I have shown and described an operative structure, many changes may be made in the size, shape, relation, proportion and distribution of parts' without departing from the spirit of my invention, and 1 wish, therefore, .that my description and showing be considered as 1n a large measure diagrammatic.

The use and operation of this invention are as follows:

Under-normal circumstances, when the operation is to be fully automatic, the parts are left in the position shown in Figures 1 and 2. When the operator wishes to tire the furnace, if he discovers that the check door or any of the other controlling doors are open, he moves the pin C6 to the r1ght,as shown in Figure 2, into the posltion which it occupies in Figure 3. This disengages the end of the pin from the slot D5 and the weight of the check door will pull the handle D1 into the upward position, permitting the door to close. As shown in Figure 1, it is the door D3 which is open and as soon as the handle D1 is free to move, the door D3 of its own weight, through the cable D2 will raise this handle into the position shown in full lines in Figure 3. When the pin C6 is moved to the right into the position which it occupies in Figure 3, the contacts F1, F1 are engaged and the circuit to the resistance of the bellows is thus closed. These contacts are kept together as long as the pin is held in the position shown in Figure 3, that is to say, until it again drops intothe notch D5. Under the infiuence of the heating which results from the actuation of Athe heating coil in response to the contact of the members F1, F1, the bellows expand, thus forcing the arm C downward until it again brings the pin C into engagement with the notch D5-.

This restores the arms to their original relative osition, as shown in Figures 1 and 2 and reaks the contacts F1, F1, permitting the bellows to contract as the resistance element is cooled and again carrying the arm D1, C, to the position which it occupied before the operator moved the handle CD to disengage the pin from the notch D5 and to permit the movement just described.

I claim:

1. In combination with an automatic damper control, a controlling lever mounted for movement, the lever including a plurality of arms, each adapted to be attached to a separate control member, the lever being adapted to move as a unit and provided with means whereby its parts may be freed during use for relative movement.

f2. In combination in an automatic damper control, a controlling lever mounted for movement, the lever including a plurality of arms, each adapted to be attached to a separate control member, the lever being adapted to move as a unit and provided with means whereby its parts may be freed for relative movement, and automatic means for again moving the lever into its unit position.

In combination with an automatic damper control, a controlling lever mounted for movement, the lever including a plurality of arms, each adapted to be attached to a separate control member, the lever being,r adapted to move as a unit and provided with manually controlled means whereby its parts may be freed during use for relative movement.

' 4. In combination in an automatic damper control, a controlling lever mounted for movement, the lever including a pair of arms, each adapted to be attached to a separate damper,

the lever being adapted to move as a unity and provided with manually controlled means whereby its parts 'may be freed for relative movement, "and automatic means for again moving the lever into its unit position.

5. In combination with an automatic damper control, a controlling lever mounted for automatic movement, means for operating it automatically, the lever including a plurality of arms, each adapted to be attached to a separate control member, the lever being adapted to move as a unit and provided with means whereby its parts may be freed during use for relative movement.

G. In combination in an automatic damper control, a controlling lever mounted for au- -tomatic movement, means Vfor operating it automatically, the lever including a plurality of arms, each adapted to be attached to a separate control member, the lever being adapted to move as a unit and provided with means whereby its parts may be freed for relative movement and automatic means for again moving the lever to its unit position.

7. In combination in a damper control, a

-controlling lever mounted for movement, the

lever including a pair of arms, each adapted to be attached to a separate damper, the lever being adapted to move as a unit and prol vided with means whereby its arms may be freed for relative movement, and automatic llO , adapted to be attached to a movement, means for operating it :rinomatically, the lever including a pair of arms, each separate damper, the lever being adapted to move as a unit and provided with means whereby its arms may be freed for relative movement, and said automatic operating means .adapted to move the lever into its unit position.

9. A damper control lever in combination in a damper controlling assembly, the lever including two arms mounted for relative movement, means for holding them against relative movement and means for permitting y their relative movement, in combinatin with means adapted to move the lever into the unit position when free to do so.

10. A damper control lever in combination in an electrically actuated damper controlling assembly, the lever including two arms mounted for relative movement, means for holding them against relative movement and means for permitting their relative movement, in combination with means adapted to move the sleverinto the unit position when free to do so.

11. A damper control lever in combination in an electrically actuated damper controlling assembly, the lever including two..

arms mounted for relative movement, means for holding them against relative movement and means for permitting their relative movement, in combination with electrical means adapted'to move the lever into the unit position when free to do so.

12. A damper control lever in combination in an automatic electrically actuated damper controlling assembly, the lever including two arms mounted for relative move- Vment, means for holding them against relative movement, and manually controlled meansy for permitting their relative movement, in combination with electrical means adapted to be put into operation by said manual control and adapted to move the lever into the unit position when free to do so.

13. .In combination in a damper controlling system, an electrically operated automatic damper` controlling assembly, a lever including two arms, one pivoted, means for normally holdin@ them to move as a unit, means for freeing tiem, `lfor relative movement, said automatic damper controlling assembly including automaticcelectrical means for restoring them to unit position.

l'14. In combination in ai damper 'controllin system, an electrically operated automatic v damper controlling4 assembly, a lever including'two arms, one pivoted upon the other, means for normally ,holding them to move' as a unit, means forrfreeing them, Afor relative movement, said automatic damper con- 'damper'lever formed said part against trolling'assembly including automatic electrical means for restoring them to unitpo'- vsition.

`ly holding them to move as a unit, manually contiolle means for freeing them, for relative movement, said automatic damper controlling assembly including automatic electrical means for restoring them to unit position.

16. In combination in a damper controlling system, i an electrically operated automatic damper controlling assembly, a lever including two arms, one pivoted with relation to the other, means for normally holding them to move as a unit, manually controlled means for freeing them, for relative movement, said automatic damper controlling assembly including automatic electrical means effective upon the operation of such manual means for restoring them to unit position.

17. In combination in a damper controlling system, an electrically operated automatic damper controlling assembly, a lever including two arms, one pivoted upon the other, means for normally holding them to move as a unit, manually controlled means for freeing them for relative movement, said automatic damper controlling assembly including automatic electrical means effective upon the operation of such manual means for restoring them to unit position.

18. In combination in an automatic dampi er control, control operating means and a to be moved for control by said operating means, andprovided with a relatively movable part pivoted thereon, means for locking relative movement and means for freeing said part for relative movement to permit movement of one of the dampers independent of the control as a whole,v responsive ,tothe movement of such member whereby said main part is moved to reen age the .relatively movable member to lock 1t in position against further relative movement.

19. In combination with an automatic damper control, a fcontrolling lever mounted for movement, the/lever including a vplurality of arms, to a separate control member, the lever beingv adapted to move Vas a'unit and provided with meanswhereby 4its parts may be `freed for relative movement, said automaticdampy er controlling assembly including automatic means foi-.again moving the lever into its unit position, such means being unaffected by the weight o'ffthe lever parts.

20. In combination with an automatic damper control, a controlling lever mounted for movement, the lever including a. pair of arms, each adapted to be attached to a of a main part adapted eachv adapted to be attached u separate damper, the lever being adapted to move as a unit and provided with manually controlled means whereby its parts may be freed for relative movement, said automatic damper controlling assembly1 including automatic means for again movlng the lever into its unit position, such means being unaffected by the Weight of the lever parts.

Signed at Quincy, county of Adams, and State of Illinois, this Lfourth day of Febru- ROBERT T. WILLIAMS. 

